// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_RENDERER_HOST_INPUT_SYNTHETIC_GESTURE_TARGET_AURA_H_
#define CONTENT_BROWSER_RENDERER_HOST_INPUT_SYNTHETIC_GESTURE_TARGET_AURA_H_

#include "base/macros.h"
#include "base/time/time.h"
#include "content/browser/renderer_host/input/synthetic_gesture_target_base.h"
#include "content/common/input/synthetic_gesture_params.h"

namespace aura {
class Window;
} // namespace aura

namespace content {

// SyntheticGestureTarget implementation for aura
class SyntheticGestureTargetAura : public SyntheticGestureTargetBase {
public:
    explicit SyntheticGestureTargetAura(RenderWidgetHostImpl* host);

    // SyntheticGestureTargetBase:
    void DispatchWebTouchEventToPlatform(
        const blink::WebTouchEvent& web_touch,
        const ui::LatencyInfo& latency_info) override;
    void DispatchWebMouseWheelEventToPlatform(
        const blink::WebMouseWheelEvent& web_wheel,
        const ui::LatencyInfo& latency_info) override;
    void DispatchWebMouseEventToPlatform(
        const blink::WebMouseEvent& web_mouse,
        const ui::LatencyInfo& latency_info) override;

    // SyntheticGestureTarget:
    SyntheticGestureParams::GestureSourceType
    GetDefaultSyntheticGestureSourceType() const override;

    float GetTouchSlopInDips() const override;

    float GetMinScalingSpanInDips() const override;

private:
    aura::Window* GetWindow() const;

    // Synthetic located event's location and touch event's radius are in DIP and
    // aura event dispatcher assumes input event is in device pixel and will apply
    // device scale factor to convert the input to DIP. So we need to use
    // device_scale_factor to convert the input event from DIP to device pixel
    // before dispatching it into platform.
    float device_scale_factor_;

    DISALLOW_COPY_AND_ASSIGN(SyntheticGestureTargetAura);
};

} // namespace content

#endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_SYNTHETIC_GESTURE_TARGET_AURA_H_
